Governor for steam-engines



A. F. CHRI S.

GOVERNOR FOR ST I NGINES. APPLICATION FILED JULY 1 1919 1,873,866. Patented Apr. 5,1921.

M/KW- A 7 OR/VEY ADOLPH F. CHRISTMAS, OF EASTON, PENNSYLVANIA, ASSIG-NOR TO INGERSOLL- RALND COMPANY, OF'JERSEY CITY, NEW JERSEY, A CORPORATION OF 1\l']-'11W' JERSEY.

T all whom it may concern Be it known that I, AnoLrH F. Grrnis'r- MAS, a. citizen of the United States, residing at Easton', in the county of Northampton and State of Pennsylvania, have invented a certain new and useful Improvement in Governors for Steam-Engines, of which the following is a specification.

This invention relates to a speed governor adapted to be applied to steam or other en gines to maintain a constant speed under various conditions of load.

The objects of the present invention are to provide a simple, easily manufactured governing mechanism adapted to be readily applied to a fly wheel provided on'the engine, which may be readily adjusted by movement of a weight and adjustment. of a spring to adjust the engine to operate at different speeds.

A further object of the invention is to provide the stud upon which the governor weight is adapted to oscillate with a suitable amount of frictional resistance tothis oscillatory movement so that vwhen the engine is operated at fairly low speeds, say from 100 to 170 R. P. M. the effect of gravity upon the movements of the weight will be obviated.

With these and other objects in View, my

invention consists in thefeatures of construction and operation set forth in the following specification.

In the drawings annexed hereto and forming a parthereof:

Figure 1 shows a front elevation of the complete mechanism forming the speed regulating means.

Fig. 2 is a cross sectional view taken upon lines 22 of Fig. 1.

Referring more particularly to the figures of the drawing, the fly wheelis shown at l and the main shaft of the engine is shown at 2. The fly wheel 1 in the instance shown is provided on the outer end of the main shaft as is usually the case in the form of shaft governor for which the present invention is particularly adapted. At 8 is shown a stud or pin outstanding from one of the arms of the fly wheel 1, upon which pin a governor body at is adapted to oscillate. The governor body 4 is provided with a split portion at 5 and is suitably bored to receive the arm 6 of the governor weight 7 Suitable bolts Specification of Letters Patent.

Application filed July 14,

GOVERNOR FOR STEAM-ENGINES.

Patented Apr. 5, 1921. 1919. Serial No. 310,737.

are provided through the split portion-5 of the body'sl as shown at 8 so that the weight 7 may be securely fastened to the body 4 in any desired position and'distance' from the.

pin 3. A spring 9 is also attached atone fly wheel 1 and difierent tensions on the spring 9 theweight 7 will'take a definite position due to the centrifugal force and the tension of spring 9, the position of the weight 7' determining the position of the cocentric pin 13 and thus the throw of the valve rod 1 1. The variations from the speed desired will vary the position of the weight 7 and thus the position of the pin 13, thus increasing or decreasing the's'upply of steam to the engine in the usual manner.

The mechanism above described is not a balanced one as is sometimes used in this form of governing mechanism. The weight 7 therefore when traveling upward during one half of therevolution of the fiy wheel will beslightly retarded by the effects of gravitation and when moving downward,

during the other half of the revolution of the engine its speed will beslightly accelerated also due to the force of gravity. In order to obviate the effects of this action on an unbalanced governor a certain amount of friction is introduced to retard the oscillation of the governor body 3 so that there will be a constant lag in the movement of the weight '7 about the pin 3.

In'FigQ a method of applying an adjustable friction to these parts is shown. It is to be understood, however, that any other suitable manner of applying friction to these parts may be carried out within the spirit of my invention.

A bolt or rod 15 extends through the pin 3 throughout its entire length. Beneath the head 16 of the pin 15 a collar 17 is provided and between the collar 17 andthe front face of the governor bodyfl any suitable friction material 18 may be applied. This may conveniently be of any fibrous material as for instance a sheet of heavy fibrous paper. Also a similar sheet of friction material 19 may be provided between the rear surface of the governor body t and the front face of the fly wheel 1. On a rear surface or the fly wheel 1 a collar 20 is provided surrounding the bolt or rod 15 against which presses a spiral spring 21. At the outer edge of the spring 21 a plate or washer 22 is provided pressing against the nut 23. Adjustment of the nut 23 will increase the pressure of the spring 21 and thus increase the frictional resistance to movement of the casting at about the pin 3.

Having thus described my invention: 1. In a governor for steam engines, the combination with a fly wheel, oi a hollow pin mounted in one arm of the fly wheel, a

bolt passing longitudinally through said pin, a governor body pivoted on said pin, a governor arm carried by said body, a governor weight adjustable to and 'from the said pin about which the weight is adapted to escillate, a collar on said bolt and friction material between said collar and the face of the said governor body, for withstanding the accelerating eflect of gravity as the weights travel with gravity.

2. In a governor for steam engines, the

combination with a fly wheel, of a hollow pin mounted in one arm of the fly wheel, a bolt passing longitudinally through said pin, a governor body pivoted on said pin, a governor arm carried by said body, a governor weight adjustable to and from the said pin about which the weight is adapted to oscillate, a collar on said bolt and friction material between said collar and the face of the said governor body, for withstanding the accelerating effect of gravity as the weight travels with gravity, and friction material between the fly wheel arm and the inner face of said fly wheel body. P

3. In a governor for steam engines, the

combination with a fly wheel, of a hollow 1 pin mounted in one arm of the fly wheel, a bolt passing longitudinally through'said pin, a spring adapted to be compressed beneath one end of the bolt, a governor body pivoted on said pin, a governor arm carried by said body, a governor weight adjustable to and from said pin about which the weight is adapted to oscillate, and friction material pressed a ainst one face of the governor body by the bolt, for withstanding the ac- I celerating effect or" gravity as the weight travels with gravity.

In testimony whereof, I have hereunto set my hand.

ADOLPH F. CHRISTMAS. 

